1. 1. Basic Difference: Flyway is a lightweight database migration tool that focuses on simplicity and ease of use. It uses a scripting-based approach, where migration scripts are written in SQL and organized in a specific directory. Liquibase, on the other hand, is a more feature-rich database migration tool that allows migrations to be defined in XML, JSON, YAML, or SQL formats. It provides a wide range of options and flexibility for managing database changes.

2. 2. Architecture: Flyway follows a versioned migration approach, where each migration script is associated with a version number and applied in order. It allows for easy tracking and management of database changes. On the other hand, Liquibase uses a changeset-based approach, where each changeset represents a single change to the database. It provides more granular control over the order of execution and allows for conditional changesets.

3. 3. Language Support: Flyway supports only SQL-based migration scripts. It allows for the execution of raw SQL statements and stored procedures. Liquibase, on the other hand, supports multiple languages and frameworks, including SQL, XML, JSON, YAML, and Groovy. It provides a higher level of abstraction and allows for easier management of complex database changes.

4. 4. Integration: Flyway integrates seamlessly with various build tools and frameworks, such as Maven, Gradle, and Spring Boot. It provides plugins and extensions for easy integration into the development workflow. Liquibase also offers integration with popular build tools and frameworks, including Ant, Maven, and Gradle. It provides custom annotations and APIs for integration with Java applications.

5. 5. Database Support: Flyway supports a wide range of databases, including MySQL, PostgreSQL, Oracle, SQL Server, and more. It provides specific features and dialects for different databases. Liquibase also supports various databases, including MySQL, PostgreSQL, Oracle, SQL Server, and more. It offers a database-agnostic approach and provides a consistent set of features across different databases.

6. 6. Community and Support: Flyway has a large and active community of users and developers. It provides extensive documentation, tutorials, and forums for getting help and support. Liquibase also has a strong community and offers comprehensive documentation, tutorials, and forums for support. Both tools have active development and regular updates.

In Summary, Flyway and Liquibase are database migration tools that have some key differences in terms of simplicity, architecture, language support, integration options, database support, and community support.